What are the common types of rocks?
Rocks are divided into three main types: igneous, sedimentary, and metamorphic. Igneous rocks are formed from the cooling and solidification of magma or lava. Sedimentary rocks are formed from particles that have been deposited and cemented together, such as sand , such as sand and mud. Metamorphic rocks are formed from the transformation of pre-existing rocks due to heat, pressure, or chemical changes.